AI Article Synopsis
- Concerns are rising about the ecological and health risks from mining waste, leading to a study of 114 soil samples from northwestern Yunnan to evaluate heavy metal pollution.
- The results showed that cadmium (Cd) had the highest pollution level (4.00), followed by lead (Pb), zinc (Zn), and copper (Cu), indicating varying spatial dependencies among these metals.
- The findings highlighted significant risks, particularly from Cd for both children and adults, stressing the importance of addressing direct ingestion and informing policymakers for better management and exposure reduction.
Article Abstract
The ecological and health risks posed by wastes discharged from mining areas to the environment and human health has aroused concern. 114 soil samples were collected from nine areas of long-term mine waste land in northwestern Yunnan to assess the pollution characteristics, ecological and health risks of heavy metals. The result revealed that the geo-accumulation indexes were Cd (4.00) > Pb (3.18) > Zn (1.87) > Cu (0.25). Semi-variance analysis revealed that Cd and Cu showed moderate spatial dependency, whereas Pb and Zn showed strong spatial dependency. Cd posed an extreme potential ecological risk. Slopes and ditches were extreme potential ecological risk areas. Non-carcinogenic risk to children from Pb and Carcinogenic risk to adult and children from Cd was non-negligible and direct ingestion was the major source. This study provided a scientific basis for policymakers in management and exposure reduction.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610562 | PMC |
| http://dx.doi.org/10.3390/toxics10100607 | DOI Listing |
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